Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:55 2012 Optimize a model with 1 rows, 157 columns and 157 nonzeros Model has 123 quadratic objective terms Presolve removed 0 rows and 37 columns Presolve time: 0.00s Presolved: 124 rows, 243 columns, 489 nonzeros Variable types: 0 continuous, 243 integer (242 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 150 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 17 28.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 15.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 27 13.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 8.00000 0.00000 100% - 0s 0 0 0.00000 0 10 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 6.00000 0.00000 100% - 0s 0 0 0.00000 0 11 6.00000 0.00000 100% - 0s 0 2 0.00000 0 11 6.00000 0.00000 100% - 0s H 81 40 5.0000000 0.00000 100% 3.3 0s H 380 139 4.0000000 0.00000 100% 5.2 0s * 430 75 15 3.0000000 0.00000 100% 5.9 0s Cutting planes: Cover: 199 MIR: 3 Zero half: 3 Explored 535 nodes (6656 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%